Nov 18, 2018, 04:4811/18/18
Hey Jonaleth
From my experience, no, the same type of champion buffs don't stack, the new one just overrides the previous, its worth noting that if the new one is a weaker buff that at current it will override the stronger buff, i tried to be cheeky once with attack buffs ....was aiming for 150% extra attack.
hope that helps